Mumbai: Weighed down by heavyweights such as Infosys Ltd and Reliance Industries Ltd, the S&P BSE Sensex fell marginally by 70 points while the Nifty ended below 10,750 mark on Thursday as the closing bell rang. The Rupee slipped by 23 paise to stand at 68.97 per dollar.

Both the key indices had opened on a positive note on Thursday morning with the Sensex opening at 35,703 level, 58 points higher against the previous session's closing.